Apt and zoom (or any custom deb)

apt-and-zoom.md

Apt and zoom (or any custom deb)

Setup

mkdir -p /srv/apt
# copy to update-zoom.py to /srv/apt

echo 'APT::Update::Pre-Invoke {"cd /srv/apt && ./update-zoom.py && apt-ftparchive packages . >Packages && apt-ftparchive release . >Release";};' >/etc/apt/apt.conf.d/100custom
echo 'deb [trusted=yes] file:/srv/apt ./' >/etc/apt/sources.list.d/custom.list

Usage

apt update
apt install zoom

update-zoom.py

#!/usr/bin/env python3

import requests

import datetime
import os

DEB_URL = 'https://zoom.us/client/latest/zoom_amd64.deb'
DEB_PATH = os.path.join(os.path.dirname(__file__), DEB_URL.split('/')[-1])

requests_kwargs = {'allow_redirects': True}

def update_required() -> bool:
    try:
        local_time = datetime.datetime.fromtimestamp(os.stat(DEB_PATH).st_mtime,
                                                     tz=datetime.timezone.utc)
    except:
        return True

    resp = requests.head(DEB_URL, **requests_kwargs)
    resp.raise_for_status()

    lastmod = resp.headers['Last-Modified']
    remote_time = datetime.datetime.strptime(lastmod, '%a, %d %b %Y %H:%M:%S GMT')
    remote_time = remote_time.astimezone(datetime.timezone.utc)

    return remote_time > local_time

    # Alternatively can compare latest vs currently installed version:
    # - Scrape latest version from https://zoom.us/download?os=linux
    # - Get current version from "dpkg-query -W -f '${Version}\\n' zoom"

if update_required():
    print('update required, downloading latest')

    with requests.get(DEB_URL, stream=True, **requests_kwargs) as resp:
        resp.raise_for_status()
        with open(DEB_PATH, 'wb') as debfile:
            for chunk in resp.iter_content(chunk_size=None):
                debfile.write(chunk)